Separator for steam-generators.



Patented Sept. l8, I900.

J. l. THDRNYCROFT.

$EPARATOB FOB STEAM GENERATORS.

(Application filed May 12, 1899-) 2 Sheets-Sheet I,

(No Model.)

No. 657,968. Patented Sept. I 8, |900.-

J. l. THORNYCROFT.

SEPABATDB FOB STEAM GENERATORS.

(Application filed May 12, 1899.) (No Model.) 2 Sheets-Sheet 2.

UNITED STATES PATENT QFFI'OE. Y

JOHN ISAAC THORNYCROFT, OF LONDON, ENGLAND.

SEPARATOR FOR STEAM-GENERATORS.

ta'x'EGIFIGATION forming part of Letters Patent No. 657,968, datedSeptember 18, 1900.

Application filed May 12, 1899.

To all whom, it may concern.-

Be it known that 1, JOHN ISAAC THORNY- CROFT, a subject of the Queen ofGreat Britain and Ireland, residing at Church Wharf, Chiswick, London,in the county of Middlesex, England, have invented Improvements inSeparators for Steam-Generators, of which the following is aspecification.

The object of this invention is to facilitate the separation of waterfrom steam,especially insteam-generators of the kind constructed withupper and lower vessels connected by downflow and upflow tubes, by whichlatter steam and water are delivered into the upper vessel or vesselswherein the separation takes place and whence the steam flows by thesteam-main and the water descends by the downflow pipe or pipes to thelower vessels. According to this invention there is provided within theupper vessel an improved device for separating water from the steam asthe same flows on its way to the steam-main, as I shall now describe bythe aid of the accompanying illustrative drawings, wherein- Figures 1and 2 show, respectively, in crossseotion and side elevation asteam-generator of the kind above referred to, the upper vessel of whichis provided with a water-separating device according to this invention.-Figs. 3 and 4 show the upper vessel and water-separating device to alarger scale, Fig. 3 showing the said upper vessel and water-separatingdevice in cross-section corresponding to the line m 00 of Fig. 4, andFig. 4 showing the vessel in longitudinal section and the water-seearating device partly in longitudinal section on the line y y of Fig. 3and partly in side elevation. Figs. 1 and 2 are drawn to a smaller scalethan Figs. 3 and 4, which are drawn to different scales.

The steam-generator shown comprises an upper steam and water vessel 1,connected by central internal downtake-tubes 2 and two inner groupsofsteam-generating tubes 3 to a lower central water vessel 4 and byexternal downtake-tubes 2 and two outer groups of steam-generating tubes3? to two lower water vessels 4 4 arranged at the outer sides of twofire-grates 5, all as more fully de- Serial No. 716,483. (No model.)

scribed in the specification of another application of Letters Patentfiled by me, Serial No. 716,484.

Thewater-separating device comprises a pipe 6,,(hereinafter called theinner pipe,) which is or may be closed at the one end 6 and at the otherend is in communication with the steam-main 7. Through an upper sideportion of the wall of the said inner pipe 6 there are fine slits oropenings 8. Around and secured to the said pipe 6 there is an outer pipeor casing 9, (hereinafter called the outer pipe,) the arrangement beingsuch as to form an annular space or outer chamber 10 between the twopipes,which space or chamber constitutes the chamber in which water isseparated from the stem as the latter flows to the steam-main 7. Throughthe upper portion of the wall of the outer pipe 9 there are slits oropenings 11. Within the annular space or chamber 10 there is alongitudinal partition 12, which connects the inner and outer pipes6 and9. The arrangementis such that the slits or openings 11 in the wall ofthe outer pipe 9 are just to one side of this longitudinal partition 12,while the slits or openings 8 in the wall of-the inner pipe 6 are justto the other side of the said partition. In the lower part of the outertube 9 there is or are one or more other slits or openings, as at 13,and below it or them there is a longitudinal casing or box 14, thebottom of which is inclined downard toward one end, near which it isprovided with an outlet-pipe 15, extending sufficiently downward withinthe vessel to reach below the normal water-level 16. This outlet-pipe 15is furnished with an automatic non-return-valve arrangement adapted toallow water to escape from the casing or box 14 through the outlet-pipe15 to the water-space of the upper vessel 1, but to prevent waterentering the casing or box from to 'part with any water mixed with thesteam while the steam is passing through the outer chamber, and fromthat chamber the steam passes by the slits or openings 8 into the innerpipe or chamber and thence to the steammain 7. The water separated fromthe steam within the annular space or outer chamber descends to thebefore-mentioned casing or box 14 and thence by its outlet-pipe 15 intothe upper vessel 1 of the boiler below the water-level therein.

The automatic non-return-valve arrangement shown in Fig. 3 comprises aconical valve 17, that closes against a seat formed at the lower end ofthe pipe 15, a fixed crosspin 18, and a coiled spring 19, that connectsthe valve to the cross-pin and keeps the valve closed except when wateraccumulates in the pipe 15, so as to be above the water-level in thevessel 1, whereupon the valve is opened by the Weight of the Water inthe said pipe 15 and allows some of that water to escape into the vessel1, after which the valve again closes.

\Vhat I claim is 1. A separator for separating water from steam comprising two chambers arranged one within the other, the outer chamberhaving a row of openings along one side thereof and having its endsclosed, the inner chamber having a row of openings along one sidethereof and having one end closed and the other end in communicationwith the steam-main, means for causing the steam to pass partly aroundthe inner chamber before it enters the same through the openingsthereof, and means for discharging the separated water from the outerchamber, substantially as described.

2. For separating water from steam in a steam-boiler, aseparatorcomprising chambers arranged one within the other, and a waterdischarge conduit connected to the lower side of the outer chamber, saidouter chamber having an inlet for wet steam and an outlet in connectionwith said dischargeconduit through which water separated from the steamwithin the outer chamber can escape, and said inner chamber having aninlet for steam from the outer chamber and an outdinal partition securedto and between thewalls of said chambers, and a water-discharge conduitconnected to the outer chamber, said outer chamber having at its upperpart and to one side of said partition, inlet-openings for wet steam andat its lower part an outlet for waterin connection with said conduit,and

said inner chamber having a series of inletopenings at the opposite sideof said partition and an outlet for connection with a steammain. l

4. For separating water from steam in a steam-boiler, a separatorcomprising an outer pipe provided at its upper part with inlet slits oropenings for wet steam and at its lower part with an outlet for Water ofcondensation,

"an inner pipe secured within the outer pipe so as to leave apractically-annular space or chamber between the two and provided at ornear its upper part with a series of slits or openings for inlet ofsteam from said space or chamber and at one end with an outlet forconnection to a steam-main, a partition secured to and between the twopipes and located between the two sets of inlet-openings therein, and awater-discharge conduit connected to the outer pipe and in communicationwith the water-outlet therefrom, substantially as described.

5. For separating water from steam in a steam boiler, a separatorcomprising two chambers connected together through suitable openings oneof the said chambers having an inlet for wet steam and an outlet forwater separated from such steam within the chamber, and the otherchamber having an outlet for connection to a steam-main, awater-discharge pipe in connection with the outlet from thefirst-mentioned chamber, and an automatic non return valve arrangementadapted to control said discharge-pipe.

6. For separating water from steam in a steam-boiler, a separatorcomprising an outer chamber having inlets for wet steam and an outletfor water of'condensation, an inner chamber secured within said outerpipe and having inlets for steam from the space between the walls of thetwo chambers and an outlet for connection with a steam-main, alongitudinal partition secured to and between the walls of said chambersand between the steam-inlets thereof, a longitudinal casing or boxsecured to the outer chamber below the water-outlet therefrom, awater-outlet pipe secured to the casing or box, and an automaticnon-return-valve arrangement ad apted to control said discharge-pipe,substantially as described.

7. In a steam-boiler, the combination with a vessel for containing steamand water, and a steam-main therefrom, of a steam and water separatorcomprising an outer longitudinal chamber having at the top, inlets forwet steam and at the bottom an outlet for Water, an inner longitudinalchamber secured within said outer chamber, closed at one end and securedat the other to said steam-main and having inlets for steam from thespace between the two chambers, a longitudinal partition secured to andbetween the walls of said chambers and located between the steam-inletsthereof, a lcngitudinal casing 01' box secured Signed at'7'7 O ornhill,in the city of London, to the outer chamber below the water-outletEngland, this 21st day of April, 1899.

thereof an outlet-pipe extendin from said v casing 01- box andterminatingbe low the wa- JOHN ISiAAO THORNYOROET' ter-level in saidVessel, and an automatic non- Witnesses: retu rn-valve arrangementadapted to control WM. V. BROWN,

said outlet-pipe, substantially as described. HUGH HUGHES.

